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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2021-03-10
Compact Metal-Mountable UHF RFID Tag Antenna with Two Large C-Shaped Slots for on-the-Fly Tuning
By
Fwee-Leong Bong,

    Dr. Fwee-Leong Bong

    Tunku Abdul Rahman University College

    Malaysia

    Homepage

Kunalen Thirappa,

    Dr. Kunalen Thirappa

    Universiti Tunku Abdul Rahman

    Malaysia

    Homepage

Eng Hock Lim,

    Professor Eng Hock Lim

    Electrical and Electronic Engineering

    Universiti Tunku Abdul Rahman

    Malaysia

    Homepage

Kogulabalan Perumal

    Dr. Kogulabalan Perumal

    OUM

    Malaysia

    Homepage

Progress In Electromagnetics Research M, Vol. 101, 173-183, 2021
doi:10.2528/PIERM21010102 | Google Scholar

Abstract
A compact folded-patch UHF RFID tag antenna (30 mm × 30 mm × 3 mm or 0.0912λ × 0.0912λ × 0.009λ) is proposed for metallic surface applications. Two large C-shaped slots, which can be easily tuned by adjusting their lengths, are incorporated into the folded-patch for providing tuning mechanisms that can be employed in the production line for tuning the tag resonant frequency on the fly. The slots are tactfully embedded into the patch structure so that they occupy no footprint. The slots are large enough so that their lengths can be easily adjusted by employing a penknife and some copper tapes. This provides an impromptu tuning mechanism so that the tag resonant frequency can be easily corrected in the production line. With reference to the effective isotropic radiated power of 4 W, the proposed tag antenna can be read from 10 m on metal. The read range is found to be able to go beyond 5.5 m when the tag is placed on a dielectric with permittivity ranging from 1 to 12.
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Citation
Fwee-Leong Bong, Kunalen Thirappa, Eng Hock Lim, and Kogulabalan Perumal, "Compact Metal-Mountable UHF RFID Tag Antenna with Two Large C-Shaped Slots for on-the-Fly Tuning," Progress In Electromagnetics Research M, Vol. 101, 173-183, 2021.
doi:10.2528/PIERM21010102
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